Spring-hinge.



No, 636,948. Patented Nov. 14, I899. E. BOMMEB.

SPRING HINGE.

(Application filbd Sept. 6, 1898.)

(No Mode l.)

UNITED STATES PATENT OFFICE.

EMIL I 3OMMER, OF NEW YORK, N. Y.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 636,948, dated November 14, 1899.

Application filed September 6, 1898. Serial No. 690,288. (No model.)

To allwhom it may concern:

Be it known that I, EMIL BOMMER, a citizen of the United States, residing in the city of hinges is effectively obviated. This sagging is caused in most cases by the use of springhinges of too small a size, which are not sufflcient to overcome the weight of the door. When a hinge of insuflicient size and power is used, the result is that as soon as the door is hung and put in action the springs of the upper hinge give somewhat, thereby permitting the door to sag.

The object of this invention is to overcome this defect, which is so often found in doubleacting spring-hinges; and the invention consists of a double-acting spring-hinge in which the exterior ends of the flanges are extended, respectively, until they reach points directly over the axes of the two pintlesand are connected by a link or strap pivoted to the ends of said extensions.

In the accompanying drawings, Figure 1 represents a side elevation of my improved double-acting spring-hinge shown with the door in open position. Fig; 2 is a plan view of the spring-hinge shown in Fig. 1. Figs. 3, 4, 5, 6, and 7 are diagrams showing the different positions of my improved doubleacting spring-hinge respectively when the door is in closed position, when swung partly in one direction, when entirely open, and

when swung partly or entirely in the opposite direction.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, Arepresents the web of a double-acting spring-hinge of the ordinary construction.

B are the barrels at each end of the web, 0 O the flanges, andD D the pintles which pass through the center of the barrels and the helical springs placed in the same. The

flanges C O are provided, preferably at their upper ends, with bracket-shaped extensions E E, which are made integral with the same, said flanges being made either of cast metal or of sheet metal stamped up by suitable dies. The extensions E E of the flanges O C are of a length which is equal to the distance between the axes of the hinge-pintles D D. The extensions E E are raised over the heads of the pintles and are connected by a strap or link F, which is pivoted at its ends to the terminals of the extensions E E, as shown in Figs. 1 and 2. The pivot strap or link F connects the extensions of the two flanges of the double-acting spring-hinge and prevents effectually the sagging of the door, as it'actsin the nature of a brace which connects the flange attached to the door with the flange applied to the j amb of the door-casing. By this strap connection of the flanges the sagging of the door is entirely prevented, even when double-acting spring-hinges of smaller size than are required for a door of certain weight are used. Whatever be the position of the spring-hinge,whether the door be swung in one or the opposite direction or in partly or entirely open or closed position, the strap or link will assist in supporting the door hung to the hinges and prevent entirely the obj ectionable sagging of the door.

Having thus described my invention, I claim as new and desire to secure by Letters Patent In double acting spring-hinges, the combination, with the flanges of the hinge, each provided at its end with a bracket-shaped extension extending to a point in line with the axis of the barrel connecting the opposite flange with the hinge-web, of a connecting strap or link pivoted to each of said extensions in line with the axes of the respective barrels, the length of said link being equal to the distance between the extension of one of said flanges and the barrel connecting said flange to the web of the hinge, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in pres ence of two subscribing witnesses.

EMIL BOMMER.

Witnesses: 1

PAUL GoEPnL, M.. HENRY WURTZEL. 

